BOSTON – The Red Sox and Bruins postponed their games Friday while authorities searched for a suspect in the Boston Marathon bombings and officials warned nearly 1 million people to stay indoors.

The teams announced about four hours before their night games were scheduled to start that they were scratched.

Police identified two suspects in Monday’s explosions that killed three people and wounded more than 180. One man was killed during a shootout with police; the other was apprehended after a massive police effort that lasted much of Friday.

Authorities in Boston suspended all mass transit, used by many fans to travel to games, and told people in the entire city and some of its suburbs to stay inside as the hunt for Suspect No. 2 went on. Businesses were asked not to open, and people waiting at bus and subway stops were told to go home.

No makeup date was announced for the opener of the Red Sox’s three-game series against the Kansas City Royals at Fenway Park. Saturday’s game, set to start at 1:10 p.m., was still on.

The NHL game at TD Garden between the Bruins and Pittsburgh Penguins, two of the top four teams in the Eastern Conference, was rescheduled for 12:30 p.m. Saturday. Saturday night’s originally scheduled game between the Buffalo Sabres and Penguins in Pittsburgh was reset for Tuesday night.

Capacity at Fenway Park, about one mile from the finish line, is 37,493 for night games. Capacity at TD Garden is 17,565.

Red Sox players and other team employees had been told to stay home until a decision was made on whether the game would be played, and the thousands of officers involved in the manhunt made security for the games difficult.

The Royals have been in town since Wednesday night and spent an off day in the city Thursday.

The team is staying at the Westin Copley Place hotel, about a block from the marathon finish.

“We’ve been told not to go outside. We’ve been told the hotel has been locked down, although I’ve seen a handful of people moving around,” Royals Vice President Mike Swanson said. “The streets are just, wow. It’s numbingly quiet for a noon hour in Boston.”

The Bruins also announced that the sale of playoff tickets, scheduled to start at 11 a.m. Friday, was put off until 11 a.m. Monday.

The New England Patriots postponed for the second time a news conference with director of player personnel Nick Caserio about next week’s draft. The news conference had been scheduled for Tuesday but was postponed after the bombings. It was rescheduled for Monday.

The suspension of Amtrak train service forced the New England Revolution to change plans and travel by bus Friday to their game against the New York Red Bulls at Harrison, N.J.

Boston College canceled sports events for Saturday.

Also postponed was the National Women’s Soccer League game Saturday between the Boston Breakers and FC Kansas City in Overland Park, Kan. No makeup date was announced. The decision was based on “increased security measures that have impacted travel from the area,” NWSL executive director Cheryl Bailey said.